Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein, M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, and n1 and n2 are each independently 1 or 2, wherein X1 is C or N; X2 is C or N; X3 is C or N; X4 is C or N; ring CY1 and ring CY2 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group; Z1 and Z2 are each independently —Si(Q1)(Q2)(Q3) or —Ge(Q1)(Q2)(Q3); a1 and a2 are each independently an integer from 0 to 10; a sum of a1 and a2 is 1 or greater; Y1 and Y2 are each independently O, S, Se, N(R51), B(R52), C(R53)(R54), Si(R55)(R56), or Ge(R57)(R58); and the remaining substituent groups are as described herein.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L1)n1(L2)n2??<Formula 1> wherein M, L1, L2, n1, and n2 in Formula 1 are the same as described in the detailed description.

Abstract: An organic light-emitting device comprising: a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, the emission layer comprises a first host and a dopant, the dopant is an organometallic compound including platinum, the organic light-emitting device satisfies a condition of: HOMO(D)?HOMO(Host 1)?0.2 electron volts, HOMO(D) is a highest occupied molecular orbital (HOMO) energy level of the dopant in electron volts, HOMO(Host 1) is a HOMO) energy level of the first host in electron volts, and HOMO(D) and HOMO(Host 1) are each measured using a photoelectron spectrometer in an ambient atmosphere.

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein, M1 is a transition metal, L1 is a ligand represented by Formula 1A, L2 is a ligand represented by Formula 1B, n1 and n2 are each independently 1 or 2, Formula 1A Formula 1B wherein X1 to X4 are each independently C or N, rings CY1 and ring CY2 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group, Z1 and Z2 are each independently Si(Q1)(Q2)(Q3) or —Ge(Q1)(Q2)(Q3), provided that each of Z1 and Z2 is not —SiH3, a1 and a2 are each independently an integer from 0 to 10, a sum of a1 and a2 is 1 or greater, Y1 and Y2 are each independently O, S, Se, or C(R5)(R6), * and *? each indicates a binding site to M1, and R1 to R3, R5, R6, and R41 to R48 are as described herein.

Abstract: A composition including a first compound including a compound represented by Formula 1, a second compound including a compound represented by Formula 2, and a third compound including a compound represented by Formula 3, and an organic light-emitting device including the composition: wherein the description of Formulae 1 to 3 are the same as described in the specification.

Abstract: Provided are a light-emitting device, an electronic apparatus including the light-emitting device, and a mixture, the light-emitting device including: a first electrode; a second electrode; and an interlayer arranged between the first electrode and the second electrode and including an emission layer, wherein the interlayer includes a first compound represented by Formula 1, a second compound that is free of an electron-transporting group, and a third compound represented by Formula 7, the second compound does not include an indolocarbazole group, and the second compound and the third compound are different from each other. In addition, provided is a mixture including the first compound, the second compound, and the third compound. The first compound, the second compound, and the third compound are respectively the same as those described in the present specification.

Abstract: An organometallic compound represented by Formula 1: M1(L1)n1(L2)n2??Formula 1 wherein M1 is a transition metal, L1 is a ligand represented by Formula 1-1, L2 is a ligand represented by Formula 1-2, n1 and n2 are each 1 or 2, and Formulae 1-1 and 1-2 are as defined herein.

Abstract: An organic light-emitting device including an emission layer including a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, the emission layer comprises a first compound, a second compound, and a third compound, and the first compound and the second compound are different from each other, each of the first compound and the second compound emits light, the third compound does not emit light, and the first compound and the second compound satisfy Conditions and Inequalities as described herein.

Abstract: An organometallic compound, represented by Formula 1: M1(Ln1)n1(Ln2)n2??Formula 1 wherein, M1 is a transition metal, Ln1 is a ligand represented by Formula 1A, Ln2 is a ligand represented by Formula 1B, n1 is 0, 1, or 2, and n2 is 1, 2, or 3, wherein * and *? each indicate a binding site to Mt, and CY1, CY2, R1, R2, R10, R20, X1, X2, Y1 to Y8, L1, Ar1, b10, b20, a1, and k1 are each as described herein.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the organometallic compound, and a diagnostic composition including the organometallic compound. M1(Ln1)n1(Ln2)n2 ??Formula 1 Ln1 is a ligand represented by Formula 1-1, Ln2 is a ligand represented by Formula 1-2, and the other substituents are as described in the detailed description.

Abstract: An organometallic compound represented by Formula 1: M1(Ln1)n1(Ln2)n2 ??Formula 1 wherein, Ln1 is a ligand represented by Formula 1A, Ln2 is a ligand represented by Formula 1B: wherein, in Formulae 1, 1A, and 1B, M1 is a transition metal, Ln1 is a ligand represented by Formula 1A, Ln2 is a ligand represented by Formula 1B, n1 is 0, 1, or 2, n2 is 1, 2, or 3, a1 is 0, 1, 2, or 3, k1 is 1, 2, 3, 4, 5, 6, 7, or 8, b10 and b20 are each independently 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, and * and *? each represents a binding site to M1, and wherein CY1, CY2, X1, X2, Y1 to Y10, L1, Ar1, R1, R2, R10, and R20 are as provided herein.

Abstract: An organometallic compound represented by Formula 1: M(L1)n1(L2)n2??Formula 1 wherein, in Formula 1, M, L1, L2, n1 and n2 are the same as described in the specification.

Abstract: An organometallic compound represented by Formula 1: M1(Ln1)n1(Ln2)3-n1??Formula 1 wherein M1 is a first-row transition metal of the Periodic Table of Elements, a second-row transition metal of the Periodic Table of Elements, or a third-row transition metal of the Periodic Table of Elements, Ln1 is a bidentate ligand, n1 is 0, 1, or 2, and Ln2 is a ligand represented by Formula 1A: wherein A1, A2, Y1, Y2, R1 to R3, R10, R20, b10, and b20 are as provided herein, and * and *? each indicate a binding site to a neighboring atom.

Abstract: A condensed cyclic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: An organic light-emitting device comprising: a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, the emission layer comprises a first host and a dopant, the dopant is an organometallic compound including platinum, the organic light-emitting device satisfies a condition of: HOMO(D)?HOMO(Host 1)?0.2 electron volts, HOMO(D) is a highest occupied molecular orbital (HOMO) energy level of the dopant in electron volts, HOMO(Host 1) is a HOMO) energy level of the first host in electron volts, and HOMO(D) and HOMO(Host 1) are each measured using a photoelectron spectrometer in an ambient atmosphere.

Abstract: An organometallic compound represented by Formula 1: M(L1)n1(L2)n2??Formula 1 In Formula 1, M is a transition metal; L1 is a ligand represented by Formula 2 as disclosed herein; L2 is a monodentate ligand, a bidentate ligand, a tridentate ligand, or a tetradentate ligand; n1 is 1, 2, or 3, wherein, when n1 is 2 or greater, two or more ligands L1 are identical to or different from each other; n2 is 0, 1, 2, 3, or 4, wherein, when n2 is 2 or greater, two or more ligands L2 are identical to or different from each other; and L1 and L2 are different from each other.

Abstract: Provided are an organometallic compound represented by Formula 1, an organic light-emitting device including the same and an electronic apparatus including the organic light-emitting device: M(L1)n1(L2)n2??<Formula 1> wherein M, L1, L2, n1, and n2 in Formula 1 are the same as described in the detailed description.

Abstract: A composition including a first compound including a compound represented by Formula 1, a second compound including a compound represented by Formula 2, and a third compound including a compound represented by Formula 3, and an organic light-emitting device including the composition: wherein the description of Formulae 1 to 3 are the same as described in the specification.

Abstract: A heterocyclic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: An organic light-emitting device including an emission layer including a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, the emission layer comprises a first compound, a second compound, and a third compound, and the first compound and the second compound are different from each other, each of the first compound and the second compound emits light, the third compound does not emit light, and the first compound and the second compound satisfy Conditions and Inequalities as described herein.